What is the ruling on marrying a girl whose mother is Muslim and whose father is Christian, and what is the ruling on marrying a Christian girl whose parents are not married?

Scholars have differed regarding the ruling on marrying a woman from the People of the Book if one of her parents is not from the People of the Book. The Shafi'is and Hanbalis held that it is not permissible, while the Hanafis and Malikis permitted it, considering her current state. The preponderant view is that it is permissible to marry her as long as she is a chaste Christian or Jew, as chastity is a fundamental condition.